US2765858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Model airplane propeller hub and cowl construction
Assignee: Individual
•
Filing: 1952-11-04
•
Granted: 1956-10-09
•
Expires: 1972-11-04
Abstract
No abstract record available.
Inventors
- 👤 Leland E Hardy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:59
CPC Classifications
A; A63; A63H; A63H27/00; A63H27/02; F; F02; F02B; F02B75/00; F02B75/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE305739C
Cited
US1730742A
Cited
US2046522A
Cited
GB547433A
Cited
US2535527A
Cited
GB650956A
Cited
US2534662A
Cited
GB671666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-09 | 1960-04-09 | 1960-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-09 | 1964-04-09 | 1964-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-09 | 1968-04-09 | 1968-10-09 | $7700.00 | Window Closed / Lapsed |